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Finding the Fourth Proportional to 389,820,906.37, 584,732,356.37 and 98,688,060.28

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Solution

The fourth proportional to 389,820,906.37, 584,732,356.37 and 98,688,060.28 is: 148,032,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,820,906.37 : 584,732,356.37 = 98,688,060.28 : x
  2. Step 2: Convert to fraction form
    389,820,906.37/584,732,356.37 = 98,688,060.28/x
  3. Step 3: Cross multiply
    389,820,906.37x = 584,732,356.37 × 98,688,060.28
  4. Step 4: Simplify right side
    389,820,906.37x = 57,706,102,031,116,128
  5. Step 5: Solve for x
    x = 57,706,102,031,116,128/389,820,906.37
  6. Step 6: Final answer
    x = 148,032,342.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.